Uriah p



(No Model.)

U. P. SAWY'BR. PUMP. No. 403,077. Patented May 7, 1889.

N. P'ETERS. Phnln-Lilhogmpher. Washi nnnnnn c UNITED STATES PATENT. OFFICE.

URIAH P. SAWYER, OF OAMILLA, GEORGIA, ASSIGNOR OF ONE-HALF TO JOSEPH A. DOLLAR, OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 403,077, dated. May 7, 1889. Application filed November 23, 1888. Serial No. 291,617. (No model.)

To all whom it may concern:

Be it known that I, URIAH P. SAWYER, of Camilla, in the county of Mitchell and State of Georgia, have invented certain new and useful Improvements in Single-Acting Lift and Force Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in pumps, and more particularly to a type in which the plunger and rod are made hollow for the passage of liquid through them.

The object of my invention is to produce a simple, durable, and free-acting pump for lifting water from deep wells or other sources of water-supply in which the pump is preferably submerged.

WVith this end in view my invention consists in certain features of construction and combinations of parts, which will be herein after described, and indicated in the claims.

In the accompanying drawings, Figure 1 represents a side elevation, in section, of a single-acting pump. Fig. 2 is a side elevation, in section, of a duplex pump embodying similar features of construction to those shown in Fig. 1. Fig. 3 is a cross-section of the pumpplunger, taken on the line x 00, Fig. 1.

In Fig. l, A represents the cylinder of the pump, provided with lugs I formed on one side to afford means for securing the cylinder in vertical position on a timber, J, or other stable structure in the well or other location of the pump, it being preferred to place the pump in the body of water that is the source of supply below the surface of the same. The inner surface of the cylinder is bored out true for the reception of the plunger B, the outer surface of which is turned to have a sliding fit in it. Between the point a on the side of the cylinder A and its bottom a the wall of the cylinder is laterally enlarged to increase the internal diameter of the same, and vertical spaced ribs 0 are formed on the inner surface of this enlarged chamber A, which ribs are trued up by the same tool that bores the portion of the cylinder above them, so that the plunger B may work freely Within the upper portion of the enlarged chamber A.

The bottom of the cylinder A is perforated centrally, as at e, to admit water or other fluid to be pumped. An annular flange, 6, thus produced, is rendered true on the inner surface to form a seat for the valve D, said valve having such a relative diameter as to slide loosely between the ribs 0 of the chamber A, and of a thickness that will give proper stability, while it affords free ingress for the fluid to be pumped when itis lifted off of its seat.

The plunger B is of a length to permit reciprocal action of the same and have a sufficient portion remain within the cylinder, when at the upper end of its stroke, to retain it in place and prevent escape of water (or other liquid pumped) from the joint between the moving plunger and the case or cylinder.

The plunger B is hollow throughout its length or between the points a a and from .its lower end, the orifice is conically contracted to the upper end, oi, as shown in Fig. 1.

A cap, E, is provided for the plunger B, which has threaded engagement with it at'g, said cap being'of about the diameter (internally considered) of the cylinder A between the points 1 and 2.

The cap-piece E is reduced in its dischargeopening from the point 1 upwardly, and at f it is tapped or screw-threaded to receive a tubular pipe, E, which latter extends vertically a suitable distance to discharge the liquid pumped from the orifice 2', its upper end being preferably bent to facilitate such a flow of pumped fluid.

The portion of the cap-piece E between 1 and 2 is formed with vertical spaced ribs 3, similar to the ribs 0 in the lower valve-chamber, A, for a similar purposethat is to say, the ribs 3 serve as guides to the valve 0, which is seated upon the true upper end, d of the hollow plunger B and plays vertically within the cap, the shoulder at 1 limiting its vertical movement, the space between the several ribs 3 affording a free water-passage into the discharge-pipe F.

To reciprocate the plunger B and the attached discharge-pipe F, a clamp, is, is placed on the pipe F at a convenient point, and a I lever, H, is loosely connected to an ear, of, which projects from the clamp, by means of a link, at, said link being pivoted to the ear and short arm of the lever, which latter is supported on a fulcrum-stand, G, to which it is pivoted at m, so that a vibration of the lever II will vertically reciprocate the plunger B and discharge-pipe F in an obvious manner.

I do not wish to restrict the construction of the operating mechanism to the exact forms herein shown, as modifications within the scope of my invention can evidently be made or other means for reciprocation of the plunger be utilized with equally as good results.

In Fig. 2 a view is given of a duplex or double-acting pump, which is composed of two pumps the lifting and forcing mechanism of which in each is identical with that shown and described as a single-acting pump. These are connected to the lengthened lever H, the fulcrum of which is placed between the pumps, so that a vibration of this lever will alternately raise and depress the plungers of the pumps to afford a nearly-continuous discharge of liquid from the discharge-orifices 2', that are preferably located close to each other, as shown.

By the peculiar construction of the hollow plunger lS-providin g it with an upwardlytapering concentric orifice through itthe water that is inducted from vacuum created in the lower valve-chamber, A, by the reciprocation of the plunger 13 will be diminished in volume as it is forced upwardly, and consequently a rapid flow is afforded, thus enabling the pump to be used where a forcible projection of the pumped fluid is needed.

In view of the above my improved pump is particularly available to raise water and force it -as a fire-engine or for the washing of walls or windows in suburban localities where no system of water distribution from a reservoir is available.

Many other uses or purposes might be named in which my pump is particularly available to fill an in dispensable want for a cheap and efficient device to lift water considerable distances and force it to an elevated point.

I-Iaving fully described my inventiomwhat I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a cylinder having an internally enlarged lower portion, ribs formed in said enlarged portion, the inner faces of the ribs being flush with the bore of the main portion of the cylinder, and a valve, of a hollow plunger and a discharge-pipe attached to the plunger, substantially as set forth.

2. In a pump, the combination, with a cylinder enlarged internally near its lower end, ribs formed in this enlarged portion of the cylinder, and a valt e covering the inlet-opening, of a plunger having a tapering bore, a cap secured to the upper end of the plunger and provided with internal ribs, a valve located within the cap and resting on the top of the plunger, and a discharge-pipe leading from the cap, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

URIAII P. SAIVYER.

\Vitnesses:

H. (l. Dornnn, T. R. BENNETT. 

